Display Device with Integrated Touch Screen and Method for Driving the Same

ABSTRACT

A display device with an integrated touch screen including a display panel including electrodes divided into a plurality of block type groups and a plurality of data lines; a display driver IC configured to apply a common voltage to the electrodes when a driving mode of the panel is a display driving mode, sequentially apply a touch scan signal to each block type group when the driving mode of the panel is a touch driving mode, and apply a data signal to the data lines associated with a corresponding block type group when the touch scan signal is applied to the corresponding block type group; and a touch IC configured to generate the touch scan signal and apply the touch scan signal to the display driver IC.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation application under 35 U.S.C. §120 ofU.S. patent application Ser. No. 13/714,083 filed on Dec. 13, 2012,which claims the benefit of the Korean Patent Application No.10-2012-0057525 filed on May 30, 2012, both of which are herebyincorporated by reference as if fully set forth herein.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a display device, and more particularlyto a display device with an integrated touch screen.

2. Discussion of the Related Art

A touch screen is an input device included in image display devices suchas Liquid Crystal Displays (LCDs), Field Emission Displays (FEDs),Plasma Display Panel (PDPs), Electroluminescent Displays (ELDs), andElectrophoretic Display (EPDs), and allows a user to input informationby applying a pressure (i.e., pressing or touching) to a touch sensor ofa touch screen. The demand of display devices with integrated touchscreens such as smart phones and tablet Personal Computers (PCs) isincreasing.

Hereinafter, a related art display device with an integrated in-celltype touch screen will be described with reference to FIG. 1. Inparticular, FIG. 1 is a diagram illustrating a related art displaydevice with an integrated self-capacitive touch screen having an in-celltype.

As shown, the related art display device includes a panel 10 with aplurality of built-in electrodes 12, a display driver IC (DD-IC) 20connected to an external system and controlling a plurality of datalines 13 inside the panel 10, and a touch IC 30 that drives theelectrodes 12 inside the panel 10. Further, the panel 10 is alternatelydriven in a display driving mode and a touch driving mode, and therebyperforms a touch function and a display function.

When the driving mode of the panel 10 is the display driving mode, theelectrodes 12 receive a common voltage through a connection line 23 toact as a plurality of common electrodes for display driving, and thedata lines 13 receive a floating voltage or a ground voltage from thedisplay driver IC 20 for driving the liquid crystal display device.

Moreover, when the driving mode of the panel 10 is the touch drivingmode, the electrodes 12 receive a touch scan signal through theconnection line 23 to act as a plurality of touch electrodes. As shownin FIG. 1, the connection line 23 is connected to the electrodes 12.

Thus, in the related art display device, an initial capacitance isgenerated between a touch electrode and a data line, and the higher theinitial capacitance, the lower the touch sensation. The reason is asfollows.

A touch sensation corresponds to a size of a signal to noise ratio(SNR), which is a value obtained by dividing an average value of asignal (which is generated when a touch is not performed) and a signal(which is generated when a touch is performed) by the maximum value ofnoise caused when a touch is not performed. Therefore, the greater thenoise, the less the size of an SNR, and thus the higher the initialcapacitance and the lower the touch sensation. Further, the noise valueis the initial capacitance value.

Hereinafter, an initial capacitance that lowers a touch sensation asdescribed above will be described in detail with reference to FIG. 2. Inparticular, FIG. 2 is an enlarged diagram of a portion A of FIG. 1illustrating the related art display device.

As illustrated in FIG. 2, an initial capacitance of 2.85 pF is formedbetween electrodes 12, and an initial capacitance of 1.6 pF is formedbetween data lines 13. Also, an initial capacitance of 98.5 pF is formedbetween an electrode 12 and a data line 13 that is formed not to overlapthe electrodes 12, and an initial capacitance of 25.3 pF is formedbetween an electrode 12 and a data line 13 that is formed to overlap thelower portion of the electrode 12.

As shown in FIG. 2, an initial capacitance formed between an electrode12 and a data line 13 is relatively greater than an initial capacitanceformed between electrodes 12 or an initial capacitance formed betweendata lines 13. Therefore, an initial capacitance formed between anelectrode 12 and a data line 13 causes relatively greater noise comparedto an initial capacitance formed between electrodes 12 or an initialcapacitance formed between data lines 13. Thus, a touch sensation islowered.

Therefore, even though the floating voltage or the ground voltage isapplied to a data line in the touch driving mode, a touch malfunctioncan occur when the floating voltage is applied to a data line in thetouch driving mode, and an initial capacitance increases when the groundvoltage is applied to a data line in the touch driving mode, causing anincrease in noise. Further, a touch sensation and the accuracy of atouch are lowered due to an initial capacitance formed between anelectrode and a data line.

SUMMARY OF THE INVENTION

Accordingly, one object of the present invention is to provide a displaydevice with an integrated touch screen and method for driving the samethat substantially obviate one or more problems due to limitations anddisadvantages of the related art.

Another object of the present invention is to provide a display devicewith an integrated touch screen which minimizes the decrease in a touchsensation due to an initial capacitance generated between a data lineand an electrode in a self-capacitive touch screen.

To achieve these and other advantages and in accordance with the purposeof the invention, as embodied and broadly described herein, the presentinvention provides in one aspect a display device with an integratedtouch screen having a display panel including electrodes divided into aplurality of block type groups and a plurality of data lines; a displaydriver IC configured to apply a common voltage to the electrodes when adriving mode of the panel is a display driving mode, sequentially applya touch scan signal to each block type group when the driving mode ofthe panel is a touch driving mode, and apply a data signal to the datalines associated with a corresponding block type group when the touchscan signal is applied to the corresponding block type group; and atouch IC configured to generate the touch scan signal and apply thetouch scan signal to the display driver IC.

In another aspect, the present invention provides a method ofcontrolling a display device with an integrated touch screen, and whichincludes dividing electrodes included in a display panel of the displaydevice into a plurality of block type groups and a plurality of datalines; applying, via a display driver IC of the display device, a commonvoltage to the electrodes when a driving mode of the panel is a displaydriving mode; sequentially applying, via the display driver IC, a touchscan signal to each block type group when the driving mode of the panelis a touch driving mode, and applying a data signal to the data linesassociated with a corresponding block type group when the touch scansignal is applied to the corresponding block type group; and generating,via a touch IC of the display device, the touch scan signal and applythe touch scan signal to the display driver IC.

It is to be understood that both the foregoing general description andthe following detailed description of the present invention areexemplary and explanatory and are intended to provide furtherexplanation of the invention as claimed.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are included to provide a furtherunderstanding of the invention and are incorporated in and constitute apart of this application, illustrate embodiments of the invention andtogether with the description serve to explain the principle of theinvention. In the drawings:

FIG. 1 is a diagram illustrating a related art display device with anintegrated touch screen;

FIG. 2 is an enlarged diagram of a portion A of FIG. 1; and

FIG. 3 is an overview illustrating a display device with integratedtouch screen according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

Reference will now be made in detail to the exemplary embodiments of thepresent invention, examples of which are illustrated in the accompanyingdrawings. Wherever possible, the same reference numbers will be usedthroughout the drawings to refer to the same or like parts.

In a display device with an integrated touch screen according to anembodiment of the present invention, a plurality of electrodes aredivided into n number of groups, and a touch scan signal is sequentiallyapplied to the n number of groups. For convenience, the followingdescription assumes the electrodes are divided into three groups.However, the present invention is not limited to dividing the electrodesinto the three groups, and the electrodes may be divided into four ormore groups. Also, a connection line that connects a touch driver and aplurality of electrodes is formed to overlap between a data line and theelectrodes, and is connected to the touch driver and the electrodes of apanel to apply a plurality of signals, applied from the touch driver, tothe respective electrodes.

In more detail, FIG. 3 is a block diagram illustrating a display devicewith an integrated touch screen according to an embodiment of thepresent invention. As illustrated in FIG. 3, the display device includesa panel 100 having a plurality of electrodes 120 divided into aplurality of block type groups 110 and a plurality of data lines 130.

Also included is a display driver IC 200 that applies a common voltageto the electrodes 120 when the driving mode of the panel 100 is adisplay driving mode, applies a touch scan signal to each of the groupswhen the driving mode of the panel 100 is a touch driving mode, andapplies a direct current (DC) voltage to the data lines 130, and a touchIC 300 that generates and applies the touch scan signal to the displaydriver IC 200.

Further, the panel 100 may include a liquid crystal layer formed betweentwo substrates. In the panel 100, the plurality of data lines 130 and aplurality of gate lines intersect each other and a plurality of pixelsare arranged in a matrix type by the intersection between the data lines130 and the gate lines, thereby defining a plurality of pixel areas. Inaddition, each of the data lines 130 applies a data signal to a pixel todrive the liquid crystal panel, and may be formed under the electrodes120.

Moreover, the groups 110 are block type groups. The block type groups110 efficiently apply a data signal to only a data line that is formedunder a group receiving the touch scan signal.

Thus, for the display driving mode, each of the electrodes 120 receivesthe common voltage from the display driver IC 200 to act as a commonelectrode. For the touch driving mode, each of the electrodes 120 actsas a touch electrode that senses a touched position with the touch scansignal applied from the touch IC 300. Also, the common voltage and thetouch scan signal are applied to respective electrodes through aconnection line 230.

In addition, even though the connection line 230 is illustrated as beingconnected to the electrodes 120 through both sides of the panel 100, theconnection line 230 actually overlaps the data line 130. In other words,the connection line 230 overlaps the data line 130 between the electrode120 and the data line 130, and is connected to the electrodes 120.

Further, the display driver IC 200 includes a touch driver 210 thatapplies the common voltage to the electrodes 120 or applies the touchscan signal by groups, and a display driver 220 that applies the DCvoltage to the data lines 130.

In more detail, the display driver IC 200 includes the touch driver 210that applies the common voltage, generated by a common voltage generatorincluded in the display driver IC 200, to the electrodes 120 when thedriving mode of the panel 100 is the display driving mode, and dividesthe electrodes 120 into three groups to sequentially apply the touchscan signal to the three groups when the driving mode of the panel 100is the touch driving mode. Further, the display driver 220 applies theDC voltage to the data lines 130 formed under any one of the threegroups receiving the touch scan signal.

For example, as illustrated in FIG. 3, when the touch scan signal forsensing a touched position is applied from the touch driver 210 to afirst group 111 through the connection line 230, the DC voltage isapplied from the display driver 220 to data lines 131 formed under theelectrodes included in the first group 111. When the touch scan signalis applied to a second group 112, the DC voltage is applied to datalines 132 formed under electrodes included in the second group 112.Similarly, when the touch scan signal is applied to a third group 113,the DC voltage is applied to data lines 133 formed under electrodesincluded in the third group 113.

Thus, the DC voltage is applied to a data line formed under a groupreceiving the touch scan signal, which decreases an initial capacitanceformed between an electrode in a group receiving the touch scan signaland a data line formed under electrodes included in the group, thuspreventing the reduction in a touch sensation.

This is because a potential difference is generated between electrodesincluded in a group receiving the touch scan signal and a data line dueto a driving voltage applied to the electrodes included in the group,which increases an initial capacitance that lowers a touch sensation.However, the potential difference between the electrodes and the dataline is minimized by applying the DC voltage to the data line, causingthe decrease in the initial capacitance.

The touch IC 300 applies the touch scan signal to the groups 110 throughthe touch driver 210 included in the display driver IC 200, and thensenses the change in the capacitance of an electrode to determinewhether the electrode is touched.

A method of driving the display device with an integrated touch screenaccording to an embodiment of the present invention will now bedescribed in detail with reference to FIG. 3. In the display device withan integrated touch screen according to the present embodiment, thedisplay driving and touch driving are temporally divided and performedaccording to the driving mode of the panel 100, and the display driverIC 200 generates a sync signal to differentiate the display driving modeand the touch driving mode.

When the driving mode of the panel 100 is the display driving mode, thecommon voltage generated by the common voltage generator included in thedisplay driver IC 200 is applied simultaneously to the electrodes 120,and the DC voltage generated in the display driver IC 200 or appliedfrom the outside to the display driver IC 200 is applied to the dataline 130 through the display driver 220.

Subsequently, the electrodes 120 receive the common voltage from thedisplay driver IC 200 through the connection line 230 to act aselectrodes for the display driving of the panel 100, and a plurality ofpixels receive the DC voltage for driving a digital logic thereofthrough the data line 130 to act as pixels for display driving.

However, when the driving mode of the panel 100 is the touch drivingmode, three divided touch scan signals generated for touch sensing inthe touch IC 300 are applied to the touch driver 210, and the DC voltagegenerated in the display driver IC 200 or applied from the outside tothe display driver IC 200 is applied to the display driver 220.

Subsequently, the three divided touch scan signals applied to the touchdriver 210 are applied to respective three groups 110 formed in thepanel 100 through the connection line 230. For example, among the threedivided touch scan signals, a first touch scan signal is applied to thefirst group 111 through the connection line 230, a second touch scansignal is applied to the second group 112, and a third touch scan signalis applied to the third group 113. Here, each of the first to thirdtouch scan signals is sequentially applied to electrodes included in acorresponding group, for which a plurality of electrodes in each groupare connected to the connection line 230.

Simultaneously, the DC voltage is sequentially applied from the displaydriver 220 to data lines formed under electrodes included in a groupreceiving the touch scan signal in the panel 100. For example, when thetouch scan signal is applied from the touch driver 210 to the firstgroup 111, the DC voltage is applied from the display driver 220 to thedata lines 131 formed under electrodes included in the first group 111.When the touch scan signal is applied from the touch driver 210 to thesecond group 112, the DC voltage is applied to the data lines 132 formedunder electrodes included in the second group 112. When the touch scansignal is applied from the touch driver 210 to the third group 113, theDC voltage is applied to the data lines 133 formed under electrodesincluded in the third group 113.

Subsequently, the electrodes 120 included in the groups 110 act aselectrodes for touch driving that receive the touch scan signal from thetouch driver 210 through the connection line 230 to detect a user'stouch position, and transfers the touch position to the touch IC 300.

In an embodiment of the present invention, a plurality of data linesformed under the groups receiving the touch scan signal receive the DCvoltage, and decrease an initial capacitance formed between an electrodein a group (which receives the touch scan signal) and a data line formedunder in the group, thus preventing the reduction in a touch sensation.

In another embodiment of the present invention, the followingdescription will be made in detail with again reference to FIG. 3 on amethod that decreases an initial capacitance generated between anelectrode in a group receiving a touch scan signal and a data lineformed under the group.

A display device with an integrated touch screen according to anotherembodiment of the present invention includes the panel 100 withelectrodes 120 that are divided into block type groups 110, and datalines 130. In addition, the display driver IC 200 applies a commonvoltage to the electrodes 120 when the driving mode of the panel 100 isa display driving mode, applies a touch scan signal to each of thegroups when the driving mode of the panel 100 is a touch driving mode,and applies a data signal to the data lines 130. Also included is thetouch IC 300 that generates and applies the touch scan signal to thedisplay driver IC 200. Except the DC voltage generator, this otherembodiment of the present invention is substantially the same as anembodiment of the present invention, and thus, a repetitive descriptionis not provided. The following description is focused on the displaydriver IC 200.

The display driver IC 200 according to this other embodiment of thepresent invention includes the touch driver 210 that applies a commonvoltage to the groups 110 or applies a touch scan signal by groups, andthe display driver 220 that applies a data signal to the data line 130.Here, the data signal applied to the data line 130 is a signal havingthe same phase as that of the touch scan signal.

Specifically, the display driver IC 200 according to another embodimentof the present invention includes the touch driver 210 that applies thecommon voltage, generated by a common voltage generator included in thedisplay driver IC 200, to the electrodes 120 when the driving mode ofthe panel 100 is the display driving mode, and divides the electrodes120 into three groups to sequentially apply the touch scan signal to thethree groups when the driving mode of the panel 100 is the touch drivingmode. Also included is the display driver 220 that applies the datasignal having the same phase as that of the touch scan signal to thedata lines 130 formed under any one of the three groups receiving thetouch scan signal when the driving mode of the panel 100 is the touchdriving mode.

For example, as illustrated in FIG. 3, when the touch scan signal forsensing a touched position is applied from the touch driver 210 to thefirst group 111 through the connection line 230, the data signal havingthe same phase as that of the touch scan signal is applied from thedisplay driver 220 to the data lines 131 formed under the electrodesincluded in the first group 111. When the touch scan signal is appliedto the second group 112, the data signal having the same phase as thatof the touch scan signal is applied from the display driver 220 to thedata lines 132 formed under the electrodes included in the second group112. When the touch scan signal is applied to the third group 113, thedata signal having the same phase as that of the touch scan signal isapplied from the display driver 220 to the data lines 133 formed underthe electrodes included in the third group 113.

In particular, a data signal applied to a data line under the electrodesincluded in a group receiving the touch scan signal may be a signal inwhich the touch scan signal applied from the touch IC 300 to the touchdriver 220 is transferred to the display driver 210.

Here, the data signal having the same phase as that of the touch scansignal is applied to a data line formed under the electrodes included ina group receiving the touch scan signal, which decreases an initialcapacitance formed between an electrode in a group receiving the touchscan signal and a data line formed under the group, thus preventing thereduction in a touch sensation.

As discussed above, this is because a potential difference is generatedbetween electrodes included in a group receiving the touch scan signaland a data line due to the touch scan signal applied to the electrodesincluded in the group. However, the potential difference between theelectrodes and the data line is minimized by applying the data signalhaving the same phase as that of the touch scan signal to the data line,thus causing the decrease in the initial capacitance.

A method of driving the display device with the integrated touch screenaccording to this other embodiment of the present invention will now bedescribed in detail with reference to FIG. 3.

According to this embodiment of the present invention, when the drivingmode of the panel 100 is the display driving mode, the common voltagegenerated by the common voltage generator included in the display driverIC 200 is applied simultaneously to the electrodes 120, and theelectrodes 120 receive the common voltage from the display driver IC 200to act as electrodes for display driving of the panel 100.

However, when the driving mode of the panel 100 is the touch drivingmode, three divided touch scan signals generated for touch sensing inthe touch IC 300 are applied to the touch driver 210, and a data signalgenerated in the display driver IC 200 is applied to the data line 130through the display driver 220. Here, the data signal may be a signalthat is generated by the touch driver 210 and applied to the displaydriver 220, and particularly, may be the touch scan signal.

Subsequently, the three divided touch scan signals applied to the touchdriver 210 are applied to respective three groups 110 formed in thepanel 100 through the connection line 230. For example, among the threedivided touch scan signals, a first touch scan signal is applied to thefirst group 111 through the connection line 230, a second touch scansignal is applied to the second group 112, and a third touch scan signalis applied to the third group 113. Here, each of the first to thirdtouch scan signals is sequentially applied to a plurality of electrodesincluded in a corresponding group. The plurality of electrodes in eachgroup are also connected to the connection line 230.

Simultaneously, the data signal is sequentially applied from the displaydriver 220 to the data lines formed under the electrodes included in agroup receiving the touch scan signal in the panel 100. Here, the datasignals respectively applied to the data lines formed under theelectrodes included in the group receiving the touch scan signal aresignals having the same phase as that of the touch scan signal.

For example, when the touch scan signal is applied from the touch driver210 to the first group 111, a plurality of data signals having the samephase as that of the touch scan signal are respectively applied from thedisplay driver 220 to the data lines 131 formed under the electrodesincluded in the first group 111. When the touch scan signal is appliedfrom the touch driver 210 to the second group 112, a plurality of datasignals having the same phase as that of the touch scan signal arerespectively applied to the data lines 132 formed under the electrodesincluded in the second group 112. When the touch scan signal is appliedfrom the touch driver 210 to the third group 113, a plurality of datasignals having the same phase as that of the touch scan signal arerespectively applied to the data lines 133 formed under the electrodesincluded in the third group 113.

In another embodiment of the present invention, a plurality of datalines formed under the groups receiving the touch scan signal receive aplurality of data signals having the same phase as that of the touchscan signal, respectively, and decrease an initial capacitance formedbetween an electrode in a group receiving the touch scan signal and adata line formed under the electrodes included in the group, thuspreventing the reduction in a touch sensation.

This is because a potential difference is generated between a pluralityof electrodes included in a group receiving the touch scan signal and adata line due to the touch scan signal applied to the electrodesincluded in the group. However, the potential difference between theelectrodes and the data line is minimized by applying the data signalhaving the same phase as that of the touch scan signal to the data line,causing the decrease in the initial capacitance.

According to the embodiments of the present invention, in theself-capacitive touch screen, when a touch scan signal is applied to onegroup, by applying a DC voltage to a data line under electrodes includedin the group receiving the touch scan signal, an initial capacitancebetween an electrode of the group and the lower data line of the groupis minimized, thus enabling the more accurate sensing of a touch.

Moreover, according to the embodiments of the present invention, in theself-capacitive touch screen, when a touch scan signal is applied to onegroup, by applying a data signal having the same phase as that of atouch scan signal to a data line under electrodes included in the groupreceiving the touch scan signal, an initial capacitance between anelectrode of the group and the lower data line of the group isminimized, thus enabling the more accurate sensing of a touch.

It will be apparent to those skilled in the art that variousmodifications and variations can be made in the present inventionwithout departing from the spirit or scope of the inventions. Thus, itis intended that the present invention covers the modifications andvariations of this invention provided they come within the scope of theappended claims and their equivalents.

What is claimed is:
 1. A driver circuit for driving a display deviceintegrated with a touch screen, the display device comprising a displaypanel including a plurality of data lines, a plurality of gate lines,and a plurality of electrodes, a plurality of pixels of the displaydevice defined at intersections of the plurality of the data lines andthe plurality of gate lines, the driver circuit comprising: a touchcircuit to generate a touch scan signal; a display driver circuitconfigured to: apply a common voltage to the electrodes, in a displaydriving mode; and apply the touch scan signal to one or more of theelectrodes and apply a signal having a same phase as the touch scansignal to one or more of the data lines corresponding to said one ormore of the electrodes to which the touch scan signal is applied, in atouch driving mode.
 2. The driver circuit of claim 1, wherein the signalhaving the same phase as the touch scan signal is a DC voltage signalhaving the same phase as the touch scan signal.
 3. The driver circuit ofclaim 1, wherein the signal having the same phase as the touch scansignal is a data signal having the same phase as the touch scan signal.4. The driver circuit of claim 1, wherein the signal having the samephase as the touch scan signal is the touch scan signal itself and thedisplay driver circuit is configured to apply the touch scan signal toone or more of the data lines corresponding to said one or more of theelectrodes to which the touch scan signal is applied, in the touchdriving mode.
 5. The driver circuit of claim 1, wherein said one or moreof the data lines corresponding to said one or more of the electrodesare disposed under said one or more of the electrodes to which the touchscan signal is applied.
 6. The driver circuit of claim 1, wherein thedisplay driver circuit applies the touch scan signal generated by thetouch circuit to said one or more of the electrodes.
 7. The drivercircuit of claim 1, wherein: the electrodes include a plurality of blocktype groups of electrodes; the display driver circuit is configured tosequentially apply the touch scan signal to each of the block typegroups of electrodes and apply the signal having the same phase as thetouch scan signal to one or more of the data lines corresponding to saideach of the block type groups of electrodes to which the touch scansignal is applied, in the touch driving mode.
 8. The driver circuit ofclaim 7, wherein said one or more of the data lines corresponding tosaid each of the block type groups of electrodes are disposed under saideach of the block type groups of electrodes to which the touch scansignal is applied.
 9. A display device with an integrated touch screen,the display device comprising: a display panel including a plurality ofdata lines, a plurality of gate lines, and a plurality of electrodes, aplurality of pixels of the display device being defined at intersectionsof the plurality of the data lines and the plurality of gate lines; anda display driver circuit configured to: apply a common voltage to theelectrodes, in a display driving mode; and apply a touch scan signal toone or more of the electrodes and apply a signal having a same phase asthe touch scan signal to one or more of the data lines corresponding tosaid one or more of the electrodes to which the touch scan signal isapplied, in a touch driving mode.
 10. The display device of claim 9,wherein the signal having the same phase as the touch scan signal is aDC voltage signal having the same phase as the touch scan signal. 11.The display device of claim 9, wherein the signal having the same phaseas the touch scan signal is a data signal having the same phase as thetouch scan signal.
 12. The display device of claim 9, wherein the signalhaving the same phase as the touch scan signal is the touch scan signalitself and the display driver circuit is configured to apply the touchscan signal to one or more of the data lines corresponding to said oneor more of the electrodes to which the touch scan signal is applied, inthe touch driving mode.
 13. The display device of claim 9, wherein saidone or more of the data lines corresponding to said one or more of theelectrodes are disposed under said one or more of the electrodes towhich the touch scan signal is applied.
 14. The display device of claim9, wherein: the electrodes include a plurality of block type groups ofelectrodes; and the display driver circuit is configured to sequentiallyapply the touch scan signal to each of the block type groups ofelectrodes and apply the signal having the same phase as the touch scansignal to one or more of the data lines corresponding to said each ofthe block type groups of electrodes to which the touch scan signal isapplied, in the touch driving mode.
 15. The display device of claim 14,wherein said one or more of the data lines corresponding to said each ofthe block type groups of electrodes are disposed under said each of theblock type groups of electrodes to which the touch scan signal isapplied.
 16. A driver circuit for driving a display device integratedwith a touch screen, the display device comprising a display panelincluding a plurality of data lines, a plurality of gate lines, and aplurality of electrodes, a plurality of pixels of the display devicedefined at intersections of the plurality of the data lines and theplurality of gate lines, the driver circuit comprising: a touch circuitto generate a touch scan signal; and a display driver circuit configuredto: apply a common voltage to the electrodes, in a display driving mode;and apply the touch scan signal to one or more of the electrodes and toone or more of the data lines corresponding to said one or more of theelectrodes to which the touch scan signal is applied, in a touch drivingmode.
 17. The driver circuit of claim 16, wherein said one or more ofthe data lines corresponding to said one or more of the electrodes aredisposed under said one or more of the electrodes to which the touchscan signal is applied.
 18. The driver circuit of claim 16, wherein thedisplay driver circuit applies the touch scan signal generated by thetouch circuit to said one or more of the electrodes.
 19. The drivercircuit of claim 16, wherein: the electrodes include a plurality ofblock type groups of electrodes; the display driver circuit isconfigured to sequentially apply the touch scan signal to each of theblock type groups of electrodes and apply the touch scan signal to oneor more of the data lines corresponding to said each of the block typegroups of electrodes to which the touch scan signal is applied, in thetouch driving mode.
 20. The driver circuit of claim 19, wherein said oneor more of the data lines corresponding to said each of the block typegroups of electrodes are disposed under said each of the block typegroups of electrodes to which the touch scan signal is applied, in thetouch driving mode.
 21. A display device with an integrated touchscreen, the display device comprising: a display panel including aplurality of data lines, a plurality of gate lines, and a plurality ofelectrodes, a plurality of pixels of the display device being defined atintersections of the plurality of the data lines and the plurality ofgate lines; and a display driver circuit configured to: apply a commonvoltage to the electrodes, in a display driving mode; and apply a touchscan signal to one or more of the electrodes and to one or more of thedata lines corresponding to said one or more of the electrodes to whichthe touch scan signal is applied, in a touch driving mode.
 22. Thedisplay device of claim 21, wherein said one or more of the data linescorresponding to said one or more of the electrodes are disposed undersaid one or more of the electrodes to which the touch scan signal isapplied.
 23. The display device of claim 21, wherein: the electrodesinclude a plurality of block type groups of electrodes; and the displaydriver circuit is configured to sequentially apply the touch scan signalto each of the block type groups of electrodes and apply the touch scansignal to one or more of the data lines corresponding to said each ofthe block type groups of electrodes to which the touch scan signal isapplied, in the touch driving mode.
 24. The driver circuit of claim 23,wherein said one or more of the data lines corresponding to said each ofthe block type groups of electrodes are disposed under said each of theblock type groups of electrodes to which the touch scan signal isapplied, in the touch driving mode.